*URGENT* Did I hard-brick my phone? Or are there any hope?

Hello guys,

yesterday i tried to install a rom, i accidentally formatted everything (including internal storage) and when i tried to reboot; it didn't. I just tried to install a stock rom with SM-G925F BUT not corresponding country of mine (on kies3 mine has AFG in paranthesis .wtf. ?), then i downloaded firmware from sammobile which has name;

G925FXXU2BOGB_G925FOJV2BOG8_G925FXXU2BOGE_HOME.tar

I kept flashing this rom and twrp recovery to reach into adb mode to flash any rom to just save my ass from losing efs/imei even if i did. But it doesnt.

To tell the problem in a way more understandable way;

The device cant boot itself.
I cant reach it from mtp or adb.
I can only get in download mode. whatever i do flash doesnt work.
it also says that cant mount efs (this part is im scared of.)

EDIT: I dont have any backup of efs.
The phone was 5.1.1 also tried to downgrade.
also tried flashing g925f pit file


Thanks for answers!